Patient Portal . Online Access to Your Medical Information 24/7 ... AdventHealth / Shawnee Mission Medical Center, Merriam, KS . 7450 Kessler Street, Merriam, KS 66204, USA . 913-831-1003 ... 20375 West 151st Street, Olathe, KS 66061, USA . 913-780-3388. Get directions. KCUC Overland Park, Overland Park, KS ....